Welcome to Imerys Performance Minerals

Perliv range

Perliv® range Expanded perlite for lightweight concrete and loose filler insulation

  • Lightweight
  • Thermal insulation
  • Sound proofing
  • Fire resistance

Imerys Perliv® is an expanded perlite designed for use in lightweight cements, plasters and mortars and as a loose filler in floors, ceilings and cavity walls.


Imerys Perliv® expanded perlite contains countless air alveolus which explains its excellent thermal insulation capacity and lightweight properties.  With an approximate density of 70 kg/m3, Perliv® is much lighter than many other traditional building materials, enabling a significant reduction in end structure weight and facilitating handling and transfer.

  • 15 times lighter than sand
  • 8 times lighter than expanded clay
  • 6 times lighter than volcanic granulates

Energy reduction

Perliv® provides optimal insulation and is much lighter in weight compared to other insulation materials. (see image 1)

Image 1

Perliv® demonstrates superior thermal resistance vs. expanded clay mortars

The superior insulation properties of Perliv® are demonstrated (image 2) by the drop in temperature provided by a construction wall system using Perliv® (orange line) and the drop in spray temperature (dotted line) for each material.

Image 2

Other key properties and benefits:

  • Fireproofing:  protecting the structure and fixed assets of the building.
  • Inert and non-toxic
  • Low abrasiveness compared to other materials
  • Easy and quick to use: does not require specialized labor
  • Easy-to-handle and transport
  • Reusable: any excess may be used in future projects
  • No saturation point: works 100% all day long with no energy reduction


  • Cement and concrete
  • Cavity  walls
  • Block fillers 
  • Outer fillers and coatings 
  • Subfloors
  • Projected plasters
  • Passive fire protection

We offer a full range of custom formulation and technical and process support services to help you match the right mineral grade to your application requirement.

Please contact us, we will be happy to help

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